/usr/share/perl5/Dancer2/Logger/File.pm is in libdancer2-perl 0.204002+dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 | package Dancer2::Logger::File;
# ABSTRACT: file-based logging engine for Dancer2
$Dancer2::Logger::File::VERSION = '0.204002';
use Carp 'carp';
use Moo;
use Dancer2::Core::Types;
with 'Dancer2::Core::Role::Logger';
use File::Spec;
use Fcntl qw(:flock SEEK_END);
use Dancer2::FileUtils qw(open_file);
use IO::File;
has environment => (
is => 'ro',
required => 1,
);
has location => (
is => 'ro',
required => 1,
);
has log_dir => (
is => 'rw',
isa => sub {
my $dir = shift;
if ( !-d $dir && !mkdir $dir ) {
die "log directory \"$dir\" does not exist and unable to create it.";
}
if ( !-w $dir ) {
die "log directory \"$dir\" is not writable."
}
},
lazy => 1,
builder => '_build_log_dir',
);
has file_name => (
is => 'ro',
isa => Str,
builder => '_build_file_name',
lazy => 1
);
has log_file => (
is => 'ro',
isa => Str,
lazy => 1,
builder => '_build_log_file',
);
has fh => (
is => 'ro',
lazy => 1,
builder => '_build_fh',
);
sub _build_log_dir { File::Spec->catdir( $_[0]->location, 'logs' ) }
sub _build_file_name {$_[0]->environment . ".log"}
sub _build_log_file {
my $self = shift;
return File::Spec->catfile( $self->log_dir, $self->file_name );
}
sub _build_fh {
my $self = shift;
my $logfile = $self->log_file;
my $fh;
unless ( $fh = open_file( '>>', $logfile ) ) {
carp "unable to create or append to $logfile";
return;
}
$fh->autoflush;
return $fh;
}
sub log {
my ( $self, $level, $message ) = @_;
my $fh = $self->fh;
return unless ( ref $fh && $fh->opened );
flock( $fh, LOCK_EX )
or carp "locking logfile $self->{logfile} failed: $!";
seek( $fh, 0, SEEK_END );
$fh->print( $self->format_message( $level => $message ) )
or carp "writing to logfile $self->{logfile} failed";
flock( $fh, LOCK_UN )
or carp "unlocking logfile $self->{logfile} failed: $!";
}
1;
__END__
=pod
=encoding UTF-8
=head1 NAME
Dancer2::Logger::File - file-based logging engine for Dancer2
=head1 VERSION
version 0.204002
=head1 DESCRIPTION
This is a logging engine that allows you to save your logs to files on disk.
Logs are not automatically rotated. Use a log rotation tool like
C<logrotate> in C<copytruncate> mode.
=head1 METHODS
=head2 log($level, $message)
Writes the log message to the file.
=head1 CONFIGURATION
The setting C<logger> should be set to C<File> in order to use this logging
engine in a Dancer2 application.
The follow attributes are supported:
=over 4
=item * C<log_dir>
Directory path to hold log files.
Defaults to F<logs> in the application directory
=item * C<file_name>
The name of the log file.
Defaults to the environment name with a F<.log> suffix
=back
Here is an example configuration that use this logger and stores logs in F</var/log/myapp>:
logger: "File"
engines:
logger:
File:
log_dir: "/var/log/myapp"
file_name: "myapp.log"
=head1 AUTHOR
Dancer Core Developers
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2016 by Alexis Sukrieh.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut
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